==== Installing VulkanSDK on ubuntu: ====

  * cf. https://vulkan.lunarg.com/doc/view/latest/linux/getting_started_ubuntu.html
  * <sxh bash; highlight: []>wget -qO - http://packages.lunarg.com/lunarg-signing-key-pub.asc | sudo apt-key add -
sudo wget -qO /etc/apt/sources.list.d/lunarg-vulkan-focal.list http://packages.lunarg.com/vulkan/lunarg-vulkan-focal.list
sudo apt update
sudo apt install vulkan-sdk</sxh>


/*
nvp vconv convert --crf 28 --preset medium -g 1.8 -n
nvp vconv convert --crf 26 --preset medium -g 1.8 -n

template <> struct LunaType<LUNA_SID("nv::WindowManager")> {
    using class_t = nv::WindowManager;
}


*/